Main text
In 2016, comparisons of activity measurements of 99mTc, 18F and 64Cu using the Transfer Instrument of the International Reference System (SIRTI) took place at the National Centre for Nuclear Research, Radioisotope Centre (POLATOM, Poland). Ampoules containing about 33 kBq of 99mTc, 28 kBq of 18F and 110 kBq of 64Cu solutions were measured in the SIRTI for about 3, 5 and 1.5 half-lives, respectively. The POLATOM standardized the activity in the ampoules by 4(LS) coincidence measurements. The comparisons, identifiers BIPM.RI(II)-K4.Tc-99m, BIPM.RI(II)-K4.F-18 and BIPM.RI(II)-K4.Cu-64, are linked to the corresponding BIPM.RI(II)-K1.Tc-99m, BIPM.RI(II)-K1.F-18 and BIPM.RI(II)-K1.Cu-64 comparisons. The BIPM.RI(II)-K1 99mTc and 18F key comparison reference values have been updated to include the latest BIPM.RI(II)-K4 linked results and degrees of equivalence for both comparison series have been evaluated.
To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.
The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
Main text
Since 1976, 30 laboratories have submitted 85 samples of 60Co to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures (BIPM), with comparison identifier BIPM.RI(II)-
K1.Co-60. Recently, the PTB (Germany), the NIST (United States), the SMU (Slovakia), the BARC (India), the LNE-LNHB (France), the POLATOM (Poland), the ENEA-INMRI (Italy), the NPL (United Kingdom), the LNMRI-IRD (Brazil), the NMISA (South Africa) and the ANSTO (Australia) participated in the comparison and the key comparison reference value (KCRV) has been updated. The degrees of equivalence between each equivalent activity measured in the SIR and the updated KCRV have been calculated and the results are given in the form of a table. A graphical representation is also given.
To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.
The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
Main text
Since 2019, 2 laboratories have submitted 2 samples of 225Ac to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures (BIPM), with comparison identifier BIPM.RI(II)-K1.Ac-225. Recently, the POLATOM (Poland) participated in the comparison and a key comparison reference value (KCRV) has been calculated. For the first time, the degrees of equivalence between each equivalent activity measured in the SIR have been calculated and the results are given in the form of a table. A graphical presentation is also given.
To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.
The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
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